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DH
Verified CAS / Academic Author2 Decoded Studies

Prof. DONG Huiyu

Solid Waste and Chemicals Management Center, Ministry of Ecology and Environment of the People's Republic of China

Co-Affiliations:Key Laboratory of Urban Stormwater System and Water Environment of Ministry of Education, Beijing University of Civil Engineering and Architecture; State Key Laboratory of Regional Environment and Sustainability, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences

Research Publications & English Decoded Briefs

Showing 2 publications
Environmental Chemistry2026DOI: 10.7524/j.issn.0254-6108.2026020803

Exploration, Practice and Prospect of New Pollutants Governance in China

The governance of new pollutants is a major strategic deployment made by China after fully building a moderately prosperous society and embarking on a new journey to comprehensively build a modern socialist country. Guided by the new development philosophy, it adheres to high-quality development, promotes economic structural transformation, and safeguards people's livelihood. This paper divides China's new pollutant governance process from the beginning of the 21st century to 2035 into four progressive stages: compliance-driven local exploration, systematic construction of strategic transformation, comprehensive implementation and in-depth layout, and long-term control and modernization improvement. It systematically reviews the development of management systems, technical standards, and basic research in each stage, clarifying the strategic position of new pollutant governance in coordinating development and security. At the critical transition between the 14th and 15th Five-Year Plans, the paper summarizes achievements and shortcomings based on the implementation of the Action Plan for the Governance of New Pollutants, proposing optimization paths for the 15th Five-Year Plan period. Key recommendations include establishing a national data sharing platform to integrate monitoring, toxicological, and governance data, implementing a diversified evaluation system to distinguish basic research from management support research, and guiding differentiated local implementation to avoid a one-size-fits-all approach. The paper emphasizes the need for international promotion to enhance China's discourse power in global environmental governance, and suggests building a multi-dimensional international communication system. These measures aim to improve the quality and efficiency of new pollutant governance, providing theoretical and practical guidance for building a Beautiful China.

Environmental Chemistry2026DOI: 10.7524/j.issn.0254-6108.2025092802

Effect of Activated Carbon Replacement Ratio in Drinking Water Treatment Plant Activated Carbon Filters on the Removal of Disinfection By-Product Precursors and Pesticide-Related Emerging Contaminants

Activated carbon (AC) filters in drinking water treatment plants (DWTPs) experience significant adsorption performance decline over extended operation, yet complete media replacement is a major cost. To evaluate cost-effective strategies, pilot-scale column experiments with five AC replacement ratios (0%, 30%, 50%, 70%, and 100%) were conducted to assess removal of disinfection by-product (DBP) precursors and pesticide-related emerging contaminants. For dissolved organic matter (DOM), all fractions except low molecular weight compounds (LMWC) achieved >85% of the removal obtained with full replacement when 70% new AC was used, with UV254 removal reaching 70%. LMWC, due to small molecular size and low adsorption energy, required higher replacement ratios or full replacement for substantial removal. For DBPs, removal of trihalomethanes (THMs) and haloacetic acids (HAAs) was insensitive to replacement ratio, while haloacetaldehydes (HALs) removal improved markedly with increasing ratio, indicating structural selectivity. For pesticide-related contaminants, all except triazoles achieved >95% removal at 70% replacement; triazoles, due to high water solubility, high polarity, and low octanol-water partition coefficient, achieved only ~60% removal. Overall, replacing 70% of AC restored treatment performance to >80% of that with full replacement, ensuring effluent quality while saving ~30% of new carbon cost. Molecular structure, polarity, and pore size matching are key determinants of removal efficiency; optimizing replacement ratio balances water quality and economic benefits.